重写fecshop\models\mysqldb\Customer无效

@appserver/config/YiiRewriteMap.php

<?php

return [
    /**
     * \fecshop\models\mongodb\Category 为原来的类
     * \appfront\local\local_models\mongodb\Category 为重写后的类
     * 重写后的类可以集成原来的类。
     */
    //'\fecshop\models\mongodb\Category'  => '\appfront\local\local_models\mongodb\Category',
    '\fecshop\models\mysqldb\customer\CustomerLogin' => '\appserver\local\local_models\mysqldb\customer\CustomerLogin',//这个重写有效
	'\fecshop\models\mongodb\Category' => '\appserver\local\local_models\mongodb\Category',//重写有效
    '\fecshop\models\mysqldb\Customer' => '\appserver\local\local_models\mysqldb\Customer'//重写无效
];

@appserver/local/local_models/mysqldb/Customer.php

<?php
namespace appserver\local\local_models\mysqldb;
use Yii;
class Customer extends \fecshop\models\mysqldb\Customer
{
    /**
     * 生成access_token
     */
    public function generateAccessToken()
    {
        echo 'here';die;
        $this->access_token = Yii::$app->security->generateRandomString();
    }
}